Bug 616733 in Mozilla bug tracker details Mozilla’s plans to disable WebSocket in Firefox 4, enabled only by updating a pref setting. A Geolocation-style Firefox prompt was proposed but did not gain support. The reason for disabling WebSocket is a Google report detailing security issues with the current WebSocket protocol. That report is available here. Apple was recently known to be considering disabling WebSocket in Safari as well.
My favorite web technology is quickly becoming the WebSocket API. WebSocket provides a welcomed alternative to the AJAX technologies we’ve been making use of over the past few years. This new API provides a method to push messages from client to server efficiently and with a simple syntax. Let’s take a look at the HTML5 WebSocket API: it’s use on the client side, server side, and an outstanding wrapper API called Socket.IO.
via David Walsh Blog – WebSocket and Socket.IO. Really great instructional and demo of a neat technology.